Password Library and Creating a Variable Integer

Projects Programming
45

And My (almost final) Password/Security Code

#include <Wire.h>
#include <LiquidCrystal.h>
#include <Keypad.h>

int pressCnt = 0;

#define Password_Length 5
char Data[Password_Length];
char Master[Password_Length] = "1234";
byte data_count = 0, master_count = 0;
bool Pass_is_good;

enum MODES
{
  MAINMENUMODE,
  SECURITYMODE,
  SECURITYMODETWO,
  COOPMODES
};
const byte ROWS = 4;
const byte COLS = 4;
MODES mode = MAINMENUMODE;

char keys[ROWS][COLS] = {
  {'1', '2', '3'},
  {'4', '5', '6'},
  {'7', '8', '9'},
  {'*', '0', '#'}
};
byte rowPins[ROWS] = {3, 5, 6, 7};
byte colPins[COLS] = {8, 9, 10};

Keypad myKeypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

LiquidCrystal lcd(A0, A1, A2, A3, A4, A5);

void setup() {
  lcd.begin(16, 2);
  MainMenu();
  Serial.begin(9600);
}

void loop() {
  char myKey = myKeypad.getKey();

  if (myKey == '#') {
    mode = SECURITYMODE;
    pressCnt = 0;
    SecurityScreen();
  }

  
   if (mode == SECURITYMODE && myKey == '*') {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("  Invalid Key  ");
    delay (2000);
    SecurityScreen();
  }
  else if (mode == SECURITYMODETWO && myKey == '*'){
    ArmedScreen();
  }
  else if (mode == SECURITYMODETWO && myKey == '#'){
    DisarmScreen();
  }
 

  if (mode == SECURITYMODE) {
    if (myKey >= '0' && myKey <= '9') {
      Data[pressCnt] = myKey;
      lcd.setCursor(pressCnt, 1);
      lcd.print('*');
      pressCnt++;
    }
  }
  
  if (pressCnt == Password_Length - 1) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Password Is ");

    if (!strcmp(Data, Master)) {
      lcd.print("Good");
      delay(1000);
      clearData();
      SecurityScreenTWO();
    }
    else {
      lcd.print("Bad");
      delay(1000);
      clearData();
      MainMenu();
    }
  }
}

void clearData() {
  while (data_count != 0)
  {
    Data[data_count--] = 0;
  }
  
pressCnt = 0;
  return;
}


void MainMenu() {
  mode = MAINMENUMODE;
  lcd.setCursor(0, 0);
  lcd.print("* for Coop");
  lcd.setCursor(0, 1);
  lcd.print("# for Security");
}

void SecurityScreen() {
  mode = SECURITYMODE;
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(" Enter Password");
}

void SecurityScreenTWO() {
  mode = SECURITYMODETWO;
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("* To Arm");
  lcd.setCursor(0, 1);
  lcd.print("# To Disarm");
}

void ArmedScreen(){
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Security System");
  lcd.setCursor(0, 1);
  lcd.print("    Is ARMED    ");
}

void DisarmScreen (){
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Security System Is");
  lcd.setCursor(0, 1);
  lcd.print("    Disarmed    ");
}